Ghost Hunt (ゴーストハント, Gōsuto Hanto), originally titled Akuryō Series (悪霊シリーズ), is a light novel series written by Fuyumi Ono.

The novels were adapted into a radio drama for Akuryō Series in 1997. A manga adaptation written and illustrated by Shiho Inada began serialization in Nakayoshi in the July 7, 1998 issue where it is still on-going. The individual chapters have been collected and published in eleven tankōbon volumes by Kodansha. It is licensed for English-language release, under the name Ghost Hunt in North America by Del Rey Manga and in the United Kingdom by Tanoshimi. An anime adaptation of the manga was created by J.C.Staff and premiered on October 3, 2006 in Japan on TV Tokyo where it ran for twenty-five episodes until its conclusion. The anime is licensed for English release on Region 1 DVD by Funimation Entertainment, which also used the name'Ghost Hunt.

Ghost Hunt follows the ghost hunting adventures of Mai Taniyama, a first year high school student, who becomes involved with the Shibuya Psychic Research Center (SPR) and its young manager, Kazuya Shibuya. Mai nicknames Kazuya Shibuya "Naru" because of his narcissistic attitude, and the nickname is generally adopted by all those who come to eventually work with SPR: a Buddhist monk, Houshou Takigawa; a shrine maiden, Ayako Matsuzaki; a famous psychic, Masako Hara; and Catholic Priest, John Brown.

Ghost Hunt also explores the paranormal abilities of the characters, particularly focusing on Mai's "latent psychic abilities," demonstrated by her dreaming about information relevant to their cases. She is often joined in her dreams by someone who she assumes to be Naru acting as a spirit guide, but whom is later revealed to be someone quite unexpected.